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What is SYNTAX Score II?
The SYNTAX Score II is an advanced version of the original SYNTAX Score, designed to improve the prediction of long-term outcomes after revascularization. It incorporates both anatomical (from the original SYNTAX Score) and clinical variables (e.g., age, sex, renal function, left ventricular ejection fraction) to provide a more personalized risk assessment.
Key Variables in SYNTAX Score II
Anatomical SYNTAX Score: Derived from the original SYNTAX Score, which evaluates the complexity of coronary lesions.
Clinical Variables:
Sex: Females may have different risk profiles.
Creatinine Clearance: Reduced renal function increases risk.
Left Ventricular Ejection Fraction (LVEF): Lower LVEF is associated with worse outcomes.
Unprotected Left Main Disease: Increases complexity and risk.
Peripheral Vascular Disease (PVD): Indicates systemic atherosclerosis.
Chronic Obstructive Pulmonary Disease (COPD): Associated with higher perioperative risk.
Clinical Applications
Personalized Decision-Making: SYNTAX Score II helps determine whether a patient should undergo PCI or CABG based on their risk profile.
Predicting Outcomes: It predicts 10-year mortality and 5-year major adverse cardiac events (MACE) with greater accuracy than the original SYNTAX Score.
Heart Team Collaboration: Facilitates discussions between interventional cardiologists and cardiac surgeons to optimize treatment strategies.
Strengths
Incorporates both anatomical and clinical factors.
Provides a more personalized risk assessment.
Validated in large clinical trials, including the SYNTAX trial.
Limitations
Requires detailed clinical and angiographic data.
Calculation can be complex without dedicated software.
May not account for all patient-specific factors (e.g., frailty, comorbidities).
References
SYNTAX Score II Official Website. https://syntaxscore.org/ .
ESC/EACTS Guidelines on Myocardial Revascularization. https://syntaxscore.org/index.php/references .
SYNTAX II 2020: Personalized Decision-Making Tool. https://paper.sciencenet.cn/htmlpaper/2020/10/2020101216555179158941.shtm .
